JP2002079864A - Automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an automobile for preventing car body side part from being largely deformed to enter the inside of a cabin when an impact load is applied to the car body side part. SOLUTION: A first projecting part 25 is arranged in a part of a seat back 4 opposed to the car body side part 7, a second projecting part 27 is arranged in a seat back part opposed to a tunnel part 12 of a car body width directional central area, and when applying the impact load F to the car body side part 7 from an external part, the car body side part 7 is received by the first projecting part 25, the second projecting part 27 of the seat back 4 is received by the tunnel part 12, and the load is dispersed to a car body 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seat having a seat cushion for supporting the buttocks of a occupant and a seat back for supporting the back of the occupant, which is arranged in a vehicle interior, and a floor in a center region in a vehicle width direction. The seat is related to an automobile that is configured as a tunnel portion having an upwardly projecting portion, and the seat is disposed between the tunnel portion and a vehicle body side portion.

[0002]

2. Description of the Related Art The application of an impact load to the side of a vehicle body from the outside is generally referred to as a side collision. When such a side collision occurs, the side of the vehicle body is prevented from greatly entering the vehicle interior. For this purpose, various proposals have hitherto been made and put to practical use. For example, a seat structure has been proposed in which a reinforcing member protruding toward the vehicle body side is fixed to the seat back frame, and when a side collision occurs, the reinforcing member receives the vehicle body side portion and distributes the load to the entire seat. (See JP-A-6-105730). According to this configuration, since the impact load is dispersed and absorbed throughout the seat, it is possible to prevent a problem that the vehicle body side portion is deformed and largely enters the vehicle interior. However, since the impact load is received exclusively by the seat, it is necessary to connect the seat firmly to the vehicle body and transmit the load transmitted to the seat to the vehicle body. However, in order to firmly connect the seat to the vehicle body, there is a possibility that the support structure of the seat becomes large and the cost thereof increases significantly.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to have a simple structure and suppress an increase in cost, and at the time of a side collision, a side portion of a vehicle body is deformed and largely enters a vehicle interior. An object of the invention is to provide a motor vehicle of the type described at the outset.

[0004]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides an automobile of the type described at the outset, wherein an outer portion of the seat back in the vehicle width direction is opposed to the vehicle body side portion, and A first protruding portion protruding toward the vehicle body side portion is provided, and a second protruding portion facing the tunnel portion and protruding toward the tunnel portion is provided on an inner portion of the seat back in the vehicle width direction. A vehicle characterized by being provided is proposed (claim 1).

The vehicle according to claim 1, further comprising a seat track for attaching the seat to a vehicle body and adjusting a front-rear position of the seat, wherein the seat track is substantially vertically above and below the tunnel portion. Fixed rails extending in the front-rear direction of the seat and fixed to the vertical wall portion rising in the vertical direction and the vertical wall portion rising substantially in the vertical direction of the vehicle body side portion, respectively. Advantageously, the movable rail has a movable rail movably attached to the fixed rail movably in the longitudinal direction, the seat cushion is supported on the movable rail, and both movable rails are fixed to each other via a connecting member. (Claim 2).

Further, in the motor vehicle according to claim 1 or 2, the seat has a headrest for supporting a head of a seated person, and the outer end of the headrest in the vehicle width direction from a center of the seat in the vehicle width direction. Is preferably greater than the distance to the inner end of the headrest in the vehicle width direction (claim 3).

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a side view showing an example of an automobile, and FIG. 2 is a cross-sectional view taken along the line II-II in FIG. 1. In FIG. The symbol Fr in FIG. 1 indicates the forward direction of the vehicle.

As can be seen from FIGS. 1 and 2, a seat 2 is disposed in a cabin R of an automobile, and the seat 2 has a seat cushion 3 for supporting a butt of a seated person (not shown).
And a seat back 4 for supporting the back of the occupant, and a headrest 5 for supporting the head of the occupant. The headrest 5 is detachably attached to an upper part of the seat back 4.

The seat back 4 has a seat back frame (see FIG. 3) as a skeleton thereof, a cushion material attached to the frame, and a skin covering the cushion material. The seat cushion 3 also has a skeleton. It has a seat cushion frame to be constituted, a cushion material attached to the frame, and a skin covering the cushion material.

In FIG. 2, reference numeral 6 denotes a floor panel which is a component of the vehicle body 1, and reference numeral 7 denotes a side of the vehicle body. As shown in FIGS. 1 and 2, the vehicle body side portion 7 of the vehicle of this embodiment includes a front door 8, a rear door 9, a center pillar 10, a rocker panel 11, and the like. And extends substantially in the front-rear direction of the vehicle body. The floor panel 6 constitutes the floor of the cabin R.

In FIG. 2, reference symbol W indicates the width direction of the vehicle body 1 and reference symbol CL indicates the center of the vehicle body in the width direction. The seat 2 is arranged between the tunnel portion 12 and the vehicle body side portion 7.
The seat 2 shown in FIG. 2 is located on the left side with respect to the forward direction Fr (FIG. 1) of the automobile, but another seat (not shown) is arranged on the right side.

FIG. 3 is a perspective view showing a seat back frame 13 and the like constituting the skeleton of the seat back 4, and also in this figure, the vehicle body 1 is indicated by a chain line.

The seat 2 may be directly supported by the vehicle body 1, but the seat 2 of the present embodiment is supported by the vehicle body 1 via a seat track 14 shown in FIGS. The seat track 14 has a vertical wall portion 15 rising substantially vertically in the tunnel portion 12 and a vertical wall portion 16 rising substantially vertically in the rocker panel 11 constituting the vehicle body side portion 7, respectively. A fixed pair of fixed rails 17, 17A,
The movable rails 18 and 18A are respectively attached to the fixed rails 17 and 17A. As shown in FIG. 4, each fixed rail 17, 17A extends in the front-rear direction A, B of the seat 2, and each movable rail 18, 18A is connected to each fixed rail 17, 17A via a ball (not shown).
Each of the fixed rails 17, 17 can be moved in the longitudinal direction of the
A and the movable rails 18, 1
8A, the seat cushion 3 is supported. In the automobile of the present embodiment, the seat cushion 3 has a pair of lower arms 19 and 19A (FIG. 3) made of a high-strength material fixed to a seat cushion frame (not shown), and each of the lower arms 19 and 19A is a seat. Track 1
4 are fixed to the respective movable rails 18 and 18A by, for example, welding. Left and right movable rails 18, 18
A and the left and right lower arms 19, 19A are connected by a connecting member 20. The two movable rails 18 and 18A are integrally fixed to each other via the connecting member 20.

When the seat 2 is pulled forward as indicated by the arrow A in FIG. 3, the movable rails 18, 18A are fixed.
The seat cushion 3 moves forward A while being guided by A, and the seat cushion 3 moves forward A together with the seat back 4. On the contrary, when the seat 2 is pushed backward B, the seat cushion 3 is pushed.
And the seat back 4 moves backward B. The seat track 14 has movable rails 18 and 18A fixed rails 17 and 17.
A lock device (not shown) is provided for locking the movable rails 18 and 18A with respect to the fixed rails 17 and 17A. By the way, sheet 2
Can be fixed at the front and rear positions. in this way,
The seat truck 14 attaches the seat 2 to the vehicle body 1,
Further, it is used for adjusting the front-back position of the seat 2.

As shown in FIG. 3, the seat back frame 13 has a frame body 21 formed in a rectangular shape by a frame material, and a cross-shaped reinforcing member 22 fixed to the body 21. Upper arms 23 and 23A are fixed to the lower part, respectively. The upper arms 23, 23A are fixedly connected to each other via a rotating shaft 24 rotatably supported by the lower arms 19, 19A, respectively. Thereby, as shown in FIG.
The seat back 4 can be tilted in the direction of arrow C,
After bringing the seat back 4 to a desired angular position,
The seat back 4 can be locked at that position by a lock device not shown.

Here, as shown in FIGS. 2 and 3, a first protrusion is provided on the outer portion of the seat back 4 in the vehicle width direction so as to face the vehicle body side portion 7 and protrude toward the vehicle body side portion 7. A part 25 is provided. In the illustrated example, each base end of the U-shaped member 26 made of a high-strength rigid body is fixed to the frame main body 21 of the seatback frame 13 also made of the high-strength rigid body. The first protruding portion 25 is constituted by these.

As shown in FIG. 5, the above-mentioned tunnel portion 12 is provided at the inner portion of the seat back 4 in the vehicle width direction.
A second protruding portion 27 is provided to face the vertical wall portion 15 and protrude toward the tunnel portion 12. In the illustrated example, as shown in FIG. 5, the upper arm 23 located on the center side in the vehicle width direction includes the base 28 and the base 2.
8 has a pair of protrusions 29 protruding toward the center in the vehicle width direction. The base 28 is fixed to the frame body 21 of the seat back frame 13 by bolts 30 and nuts 31. , The second protruding portion 27 described above. Both upper arms 23, 23A
Garnish 32, so as not to be seen from the outside
32A (see FIGS. 2 and 5).

When an impact load is applied from outside the vehicle body side portion 7 as shown by an arrow F in FIG.
Deforms towards. At this time, the vehicle body side portion 7 abuts on the first protrusion 25 and is received by the seat back 4. In this way, the impact load is transmitted to the seat back 4, and after the seat back 4 is slightly shifted toward the center in the vehicle width direction, the second protrusion 27 provided on the seat back 4 is Hits the vertical wall 15,
The seat back 4 is received by the tunnel 12. The load transmitted to the tunnel portion 12 in this manner is the
Are distributed throughout.

As described above, the impact load F applied to the vehicle body side portion 7 is received by the vehicle body 1 via the seat back 4 and dispersed, so that the seat 2 is particularly strongly connected to the vehicle body 1. At least, the amount by which the vehicle body side portion 7 deforms and enters the interior of the vehicle compartment can be kept small. As described above, the structure for supporting the seat 2 can be simplified, the cost can be reduced, and the amount of deformation of the vehicle body side portion 7 when a side collision occurs can be effectively reduced.

The above-described effects can be obtained only by providing the first and second protruding portions 25 and 27.
In the automobile of this example, as described above, the fixed rails 17 and 17A of the seat truck 14 are fixed to the tunnel portion 12 and the vertical wall portions 15 and 16 of the rocker panel 11, respectively, and the two movable rails 18 and 18A are connected. Since they are fixed to each other via the member 20, the load applied to the rocker panel 11 when a side collision occurs is received by the fixed rail 17A located on the outside in the vehicle width direction. Then, the load is transmitted to the movable rail 18 and the fixed rail 17 on the center side in the vehicle width direction via the connecting member 20, further received by the vertical wall portion 15 of the tunnel portion 12, and dispersed throughout the vehicle body 1. Is done. Thus, the fixed rails 17, 17A
To each of the vertical wall portions 15 of the tunnel portion 12 and the rocker panel 11,
16 and the movable rails 18 and 18A are fixedly connected to each other, so that an impact load applied substantially horizontally to the vehicle body side portion 7 can be efficiently received and dispersed throughout the vehicle body 1. Thus, the amount of displacement of the vehicle body side portion 7 on the vehicle interior side can be more effectively reduced.

Further, in the illustrated example, as clearly shown in FIG. 2, the distance L1 from the center CL1 of the seat 2 in the vehicle width direction W to the outer end 33A of the headrest 5 in the vehicle width direction is the same as the vehicle body of the seat 2. The distance L2 from the center CL1 in the width direction to the inner end 33 of the headrest 5 in the vehicle width direction is set to be larger than the distance L2. As a result, an impact load F is applied to the vehicle body side 7 from the outside, and the vehicle body side 7
Is displaced toward the vehicle interior, the vehicle body side portion 7 hits the outer end 33A of the headrest 5 and is received. This makes it possible to more effectively reduce the amount of the vehicle body side portion 7 entering the vehicle interior.

As shown in FIGS. 2 and 3, when the first projecting portion 25 is formed by the U-shaped member 26, the U-shaped member 26 is gripped when the occupant gets on and off the vehicle interior. It can also be used as a grip.

Further, since the seat back 4 is provided with the first and second projecting portions 26 and 27 projecting in the vehicle width direction,
In order to suppress the displacement of the side of the vehicle body in the event of a side collision, it is not necessary to provide a protruding portion toward the vehicle body 1, and the vehicle body surface can be flattened.

Further, the fixed rails 17, 17A of the seat track 14 are fixed to the vertical walls 15, 16, and the movable rails 18, 18A are assembled to the fixed rails 17, 17A. The height H (FIG. 3) is increased, and the contact area between each movable rail 18, 18A and each lower arm 19, 19A can be increased. For this reason, even if the lower arms 19 and 19A are miniaturized, the lower arms 19 and 19A can be firmly connected to the respective movable rails 18 and 18A, and the weight and cost are reduced due to the miniaturization of the lower arms 19 and 19A. Can be achieved.

Further, in the example shown in FIG. 3, the tunnel portion 12 opposing the second projecting portion 27 so that the second projecting portion 27 can contact the vertical wall portion 15 of the tunnel portion 12 with a large area. The height of the portion 12A of the
It is formed higher than the height of B. At this time, this part 12
By forming a concave portion 34 at the top of A and providing a lid (not shown) that can open and close the upper opening of the concave portion 34, the concave portion 34 can be configured as a storage, a safe, a hot refrigerator, or the like. is there.

The present invention can be applied to various types of automobiles other than those shown, for example, trucks.

[0028]

According to the first aspect of the present invention, when a side collision occurs, the side portion of the vehicle body is received by the first projection provided on the seat back, and the second projection provided on the seat back. Can be received by the tunnel portion, so that the vehicle body side portion can be prevented from largely entering the vehicle interior. In addition, it is possible to suppress the complexity of the support structure of the seat and the increase in the cost.

According to the second or third aspect of the present invention, it is possible to further reduce the amount of displacement of the side of the vehicle body toward the passenger compartment when a side collision occurs.

[Brief description of the drawings]

FIG. 1 is a schematic side view of an automobile, in which a vehicle body is represented by a chain line in order to clarify a state of a seat.

FIG. 2 is an enlarged sectional view taken along line II-II of FIG.

FIG. 3 is a perspective view showing a seat back frame and the like, and is a diagram showing a vehicle body by a chain line.

FIG. 4 is an enlarged perspective view of a fixed rail and a movable rail.

FIG. 5 is a partial cross-sectional plan view when the second protrusion is viewed from above.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Body 2 Seat 3 Seat cushion 4 Seat back 5 Headrest 6 Floor panel 7 Body side part 12 Tunnel part 14 Seat track 15 Vertical wall part 16 Vertical wall part 17 Fixed rail 17A Fixed rail 18 Movable rail 18A Movable rail 20 Connecting member 25 1 protrusion 27 second protrusion 33 inner end 33A outer end CL center CL1 center L1 distance L2 distance R cabin W body width direction

Claims (3)

[Claims] 1. A seat having a seat cushion for supporting the buttocks of a seated occupant and a seat back for supporting the back of the seated occupant is disposed in a vehicle interior, and a floor panel portion in a center region in a vehicle width direction protrudes upward. The seat is disposed between the tunnel portion and the vehicle body side portion, wherein the seat is opposed to the vehicle body side portion on a vehicle width direction outside portion of the seat back, and A first protruding portion protruding toward the vehicle body side portion is provided, and a second protruding portion facing the tunnel portion and protruding toward the tunnel portion is provided on an inner portion of the seat back in the vehicle width direction. An automobile characterized by being provided. 2. A seat track for attaching the seat to a vehicle body and adjusting a front-rear position of the seat, the seat track including a vertical wall portion rising substantially up and down of the tunnel portion. Fixed rails which are respectively fixed to the vertical wall portions rising substantially vertically in the vehicle body side portion and extend in the front-rear direction of the seat, and the fixed rails movably in the longitudinal direction of each fixed rail. The vehicle according to claim 1, further comprising a movable rail assembled thereto, wherein the movable rail supports the seat cushion, and both movable rails are fixed to each other via a connecting member. 3. The seat has a headrest for supporting a head of a seated person, and a distance from a center of the seat in a vehicle width direction to an outer end of the headrest in a vehicle width direction is set to be inside of the headrest in a vehicle width direction. The vehicle according to claim 1 or 2, wherein the distance is set to be larger than a distance to an end.